Preparation method of fibroin nanofibers
A technology of nanofiber and silk fibroin, which is applied in fiber processing, fiber chemical characteristics, filament/thread forming, etc., can solve problems such as complex process, and achieve the effect of excellent performance, small fiber diameter and stable structure
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Embodiment 1
[0021] Use 0.05g / L sodium carbonate solution to remove sericin on the surface of 10g silk, wash it with deionized water and dry it, then dissolve it in 100ml of CaCl 2 \C 2 h 5 OH\H 2 In the ternary solution of O, obtain the silk fibroin inorganic salt mixed solution, utilize the dialysis bag to obtain the 6ml silk fibroin solution that mass fraction is 10% after dialysis;
[0022] The silk fibroin solution and HFIP were mixed at a volume ratio of 1:5, stirred for 60 minutes, and transferred to the syringe of a triangular cross-section nozzle. Under the action of a 10kV / cm high-voltage electric field, the spinning solution was ejected from the nozzle to form silk fibroin nanofibers. Observation by SEM shows that the average diameter of the fiber is about 600nm, and the cross section is mostly obtuse triangle.
Embodiment 2
[0024] Use 0.07g / L sodium carbonate solution to remove sericin on the surface of 10g silk, wash it with deionized water and dry it, then dissolve it in 80ml of CaCl 2 \C 2 h 5 OH\H 2 In the ternary solution of O, obtain the silk fibroin inorganic salt mixed solution, utilize the dialysis bag to obtain the 4ml silk fibroin solution that mass fraction is 30% after dialysis;
[0025] The silk fibroin solution and HFIP were mixed at a volume ratio of 1:10, stirred for 30 minutes, and transferred to the syringe of a triangular cross-section nozzle. Under the action of a 60kV / cm high-voltage electric field, the spinning solution was ejected from the nozzle to form silk fibroin nanofibers. Observation by SEM shows that the average diameter of the fiber is about 100nm, and the cross section is mostly acute triangle.
Embodiment 3
[0027] Use 0.05g / L sodium carbonate solution to remove sericin on the surface of 10g silk, wash it with deionized water and dry it, then dissolve it in 90ml of CaCl 2 \C 2 h 5 OH\H 2 In the ternary solution of O, obtain the silk fibroin inorganic salt mixed solution, utilize the dialysis bag to obtain the 5ml silk fibroin solution that mass fraction is 20% after dialysis;
[0028] The silk fibroin solution and HFIP were mixed at a volume ratio of 1:8, stirred for 50 minutes, and transferred to the syringe of a triangular cross-section nozzle. Under the action of a 45kV / cm high-voltage electric field, the spinning solution was ejected from the nozzle to form silk fibroin nanofibers. Observation by SEM shows that the average diameter of the fiber is about 300nm, and the cross section is mostly acute triangle.
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